Lamp-reservoir



(No Model.)

W. P. BUTLER.

v LAMP RESERVOIR. No. 337,302. Patented Man 2, 1886.

Evan 707'. -WiZliamZ?1?uZ Z ZZZ? N. FUCHS, Phobljlhagraphnr. Washington,D.C.

UNITE STATES WILLIAM P. BUTLER, OF CHICAGO, ILLINOIS.

LAMP-RESERVOIR.

' SPECIFICATION forming part of Letters Patent No. 33 7,302, dated March2, 1886. 1

Application filed April 9, E884. Renewed July 13, 1885. Serial No.171,521. (No model) I T 0 all whom it indyhchncefn; 4,

Be it known that 1, WILLIAM P. BUTLER, a citizen of the United States,residing at Chicago, Illinois, have invented new and useful Improvementsin Lamps, of which the following is a specification.

My invention relates to that class of lamps in which the oil iscontained within an inverted reservoir provided with a lowerfeedopening, by which the oil is conveyed from the reservoir to theburner, such lamps being generally denominated as students lamps.

It is the object of my invention to provide a simple and cheap cover forthe oil-opening in the reservoir, whereby a clear unobstructedpassage-way is afforded for replenishing the reservoir, and which whenclosed will retain the oil while the inverted reservoir is beingreplaced in the cup.

The object of my invention I accomplish in the manner and by the meanshereinafter described and claimed, reference being made to theaccompanying drawings, in which Figure 1 is a central vertical section,and Fig. 2 is a horizontal section, of the reservoir upon the line 1 1,Fig. 1.

In the said drawings the reference-number 1 indicates the frame orstandard of the lamp, which may be of the ordinary construction,a-ndwhich has the illuminating mechanism adjustably mounted thereon by anarm, 2, upon one end of which is rigidly attached the cup which carriesthe oil-reservoir and upon the other the wick-cylinder. Theoil-reservoir 3 is of the usual form, and is provided at its lower endwith a central threaded tubular section, 4, leading to the interior ofthe reservoir. The opening is closed by a cap, 5, mounted upon a spring,6, which normally throws it down and closes the opening. The oppositeend of the spring, which is a flat leaf-spring, isattached by a pivot,7, to the bottom of the reservoir, so that'the spring-plate and the capcan be swung or moved laterally on or with the pivotpin. The cap 5 isprovided with a pin or rod, 8, which is of somewhat greater length thanthe tubing in which it stands, and in the bottom of the cup 9, whichreceives the reservoir, is placed a central tube-section having a femalethread which receives the section 4.. When the parts are in place, asshown in Fig. 1, the

end of the pin 8 will strike the bottom of the cup 9 and lift the cap 5sufficiently to' allow the oil to flow to the wick'cylinder.

The advantages of this construction are as follows: In filling thereservoir the opening is unobstructed,as the operator, by means of thepin 8, swings the cap 5 laterally to one side, as shown in Fig. 2, andthen restores it to place when the reservoir is filled, in the one casegiving a free opening for the admission of oil and in the other atightjoint, which will prevent leakage when the reservoir is invcrted tobe placed in the cup.

The wick-cylinder 10 is mounted upon the end of the arm 2, and containsthe wick 11, which is tied to a feeding-cylinder, 12, the latter beingoperated by a ratchet, 13.

Located within the wickcylinder 10, and having central arrangement, is asupport, 14, upon the upper end of which is mounted a cap, 15, havingits edge flaring outwardly until it is above the end of the wick 11 andsubstantially within the sphere of combustion. The lower end of thecylinder is open, giving free access to air, which as it passes uptherein must be carried between the flame and the edge of the cap 15,thereby insuring more perfeet admixture of the two. The cap also spreadsthe flame outward upon all sides, increasing the size, and thereby theilluminating power of the same. Draft is also provided for exteriorly tosaid flame by an opening, 16, surrounding the cylinder. The air enteringoutside thereof is deflected toward the wick by an inwardly-flangedplate, 17, surrounding the upper end of the wick-cylinder.

The chimney 18 is applied in the usual form, and a globe may be mountedupon the support 19, which is of the peculiar construction.

The wick-feeding cylinder 12 may be perforated to form a rack for thefeeding-ratchet 13, but in such a construction the wick wouldnecessarily be placed inside the said cylin- (ler.

I do not claim a coiled spring encircling a valve-stem carrying aball-valve for closing.

the orifice in the oil-reservoir, the valve-stem being extended so thatthe valve is moved from its seat when the reservoir is inserted in thecup.

1. In a lamp having a wick supplied from a reservoir, the combination,with the cup and the reservoir having an orifice in its bottom, of alaterally'movable fiat or leaf spring in the reservoir, a cap attachedto one end of the spring, and a pin or rod mounted on the cap for movingthe spring and cap laterally, sub stantially as described.

2. In a students lamp, the combination, with the cap and the reservoirhaving an orifice in its bottom, of a laterally-swinging flat springpivoted at one end to the reservoir, a cap attached to the other end ofthe spring, and a pin projecting from the cap for swinging the cap andspring laterally and also opening the orifice in the reservoir,substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM P. BUTLER. Witnesses:

GEORGE S. :MARKHAM, ALMER H. 'WELLs.

